Bughut,
I wish this was the answer, but, the cake I made was baked in a loaf pan that was actually oversized for the recipe, so, I know that the pan was not too large! Also, I will not be icing it, so turning it upside down is not an option... it is a lemon pecan pound cake with a lemon glaze drizzled on top. ( The top of the cake is beautiful )
If the batter is thick as with most loaf type cakes, you can lightly pull the batter to the ends in two quick swipes. Starting from the centre and pull toward one end then from the centre to the other end leaving a slight indent in the middle. The helps make a more even top.
My understanding of this is that the edges of the cake cook/set before the center. Once set, they stop rising. The un-set center continues to rise.
Some of the remedies include wrapping strips of wet cloth around the edges of the pans when you bake them, these can be bought in supply stores and are called cake strips. They slow down the edges during baking. You could bake at a slightly lower temp or place a metal flower nail in the center of the cake to conduct heat to the center of the cake as it bakes. You can use a cake round/circle or cake cardboard cut to fit inside the pan and press down lightly when the cake is still warm in the pan to compress the hump. On a cake to be decorated you can slice off the hump.
Not being a baker so I may be wrong, but I think it is a metal disk attached to a rod for forming flowers out of frosting or gum paste, called a "flower nail" because it is shaped like a big headed nail.
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